media: i2c: ov4689: Fix typo in a comment

Fix a spelling error in a comment.
Signed-off-by: Mikhail Rudenko <mike.rudenko@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/i2c/ov4689.c

@@ -692,7 +692,7 @@ static int ov4689_set_ctrl(struct v4l2_ctrl *ctrl)
 
 	switch (ctrl->id) {
 	case V4L2_CID_EXPOSURE:
-		/* 4 least significant bits of expsoure are fractional part */
+		/* 4 least significant bits of exposure are fractional part */
 		ret = ov4689_write_reg(ov4689->client, OV4689_REG_EXPOSURE,
 				       OV4689_REG_VALUE_24BIT, ctrl->val << 4);
 		break;